multi level C<#> wildcards. Defaults to B<collectd/#>, i.e. all topics beneath
the B<collectd> branch.
+=item B<CACert> I<file>
+
+Path to the PEM-encoded CA certificate file. Setting this option enables TLS
+communication with the MQTT broker, and as such, B<Port> should be the TLS-enabled
+port of the MQTT broker.
+
+=item B<CertificateFile> I<file>
+
+Path to the PEM-encoded certificate file to use as client certificate when
+connecting to the MQTT broker. Requires B<CertificateFile>
+
+=item B<CertificateKeyFile> I<file>
+
+Path to the unencrypted PEM-encoded key file corresponding to B<CertificateFile>.
+
+=item B<TLSprotocol> I<protocol>
+
+If configured, this specifies the string protocol version (e.g. tlsv1, tlsv1.2) to
+use for the TLS connection to the broker. If not set a default version is used which
+depends on the version of OpenSSL the Mosquitto library was linked against.
+
+=item B<CipherSuite> I<ciphersuite>
+
+A string describing the ciphers available for use. See the "openssl ciphers" utility
+for more information. If unset, the default ciphers will be used.
+
+
=back
=head2 Plugin C<mysql>
Timeout 1000
Prefix "collectd/"
Database 1
+ MaxSetSize -1
+ StoreRates true
</Node>
</Plugin>
C<ZRANGEBYSCORE> I<Redis> command. Additionally, all the identifiers of these
I<Sorted Sets> are kept in a I<Set> called C<collectd/values> (or
C<${prefix}/values> if the B<Prefix> option was specified) and can be retrieved
-using the C<SMEMBERS> I<Redis> command. You can specify the database to use
+using the C<SMEMBERS> I<Redis> command. You can specify the database to use
with the B<Database> parameter (default is C<0>). See
L<http://redis.io/commands#sorted_set> and L<http://redis.io/commands#set> for
details.
=item B<Database> I<Index>
-This index selects the redis database to use for writing operations. Defaults to C<0>.
+This index selects the redis database to use for writing operations. Defaults
+to C<0>.
+
+=item B<MaxSetSize> I<Items>
+
+The B<MaxSetSize> option limits the number of items that the I<Sorted Sets> can
+hold. Negative values for I<Items> sets no limit, which is the default behavior.
+
+=item B<StoreRates> B<true>|B<false>
+
+If set to B<true> (the default), convert counter values to rates. If set to
+B<false> counter values are stored as is, i.e. as an increasing integer number.
=back